The Olympic Athletes’ Hub aggregates the social media feeds of more than 1,000 current and former Olympians. It will post content directly from their Facebook and Twitter accounts and incorporate a gamification layer so fans can interact with the site. Users will be able to access exclusive training-tips videos and gain virtual and real-world prizes according to how many athletes they like and follow online.

“Terrorism is a threat for any major western country,” London Olympics Minister Hugh Robertson told a news conference in Kew Gardens to mark the 100-day countdown. “It is now and it always has been.

NBC is dispatching about 1,500 people to the U.K. They’ll be working in 65,000 square feet of space inside the International Broadcast Centre, plus various event and non-event venues in and around London. Live video will be transmitted between New York and London using a mix of satellites and four OC-48 (2.488 Gbps) fiber links provided by AT&T. NBC has also signed a deal with YouTube for it to provide the video player on NBCOlympics.com, which will carry some 3,000 hours of the network’s Olympic coverage.